Fix problem with A-Data 2GB microSD card - Revisited

Sean McNeil sean at
Thu May 15 08:28:16 CEST 2008

I have nothing yet to backup this, but it appears that the recent 
checkins for power management is affecting mmc. If the phone does any 
suspend/resume I seem to get corruption in the sdcard. It will be a 
while before I can look into this.

Andy Green wrote:
> Somebody in the thread at some point said:
> |> The best way I heard to explain it yet is just a mismatch between the
> |> worst case slowness of that card and the biggest timeout the Glamo can
> |> express at the faster clock rates.  If the timeout register had another
> |> nybble in its counter we would just have set it to FFFF and forgotten
> |> about it.
> | Ah, OK. Could this also be related to the length of the transfer? What
> | if I reduce the number of blocks that can be read/written at once?
> | Something with req_size or seg_size?
> Maybe... but I seem to recall they are all quite modest, 4096 bytes or
> something (dim memory though).
> -Andy

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